I received it! Very nice motor. A bit longer than 65161.
Nice size of wires (90cm mast on the photo)!
I melted some xt90 connectors on my first motor, too many max power starts when i was learning. I’d switch to xt150 when you anyway cut the unnecessary wire length.
Congrats, fam! Have you tested it out yet? Is it louder than the 65161 or nah?
You might be a big guy because with my non optimized configuration : wingfoil board 120L+ 65161 motor + battery/ Vesc case on top, I feel the system overated and think to scale down the power (6384 motor).
I am 78 kg and using a XLT curve foil and nominal battery current is in the range of 20-25 amps. Peak current can goes up to 80 at startup but can be limited by the settings if necessary.
Curious about why you would change motor???
High volume board at 120l and a big foil XLT (I think it’s 2100 cm2) would pop you up quickly and if you are cruising at 25A then your battery would provide good range. Acceleration and top speed are controlled by remote so control of that is literally in your hands.
True, i could lose some weight 
also my board and propeller wasn’t optimised at the time but with the xt150s i had headroom for that. I’ve had smaller connector melting before, generally they can work but if you want it to be foolproof then size it with some margin. I don’t see the point in skimping with connectors, especially since over the lifetime they can lose some of the conductivity, especially if they heat up or are connected/disconnected at every cycle.
Quite simple, and applicable to all electrical vehicle (with current battery technology): to reduce the weight thus the power consumption (or increasing the autonomy).
As most of us on this forum, the plan is to cut down and optimize the total weight, so with a smaller and DIY board, smaller motor & VESC…
Of course, it depends on your foiling requirement (top speed, cruise speed, pilot weight and experience…).
For my purpose, not looking for a top speed and more carving etc…, 2000 W nominal is sufficient and peak consumption are transient so can be managed with equipement specification and settings to limit the current.
65151 motor nominal is 3000W/ 6000 W max with a 75200 VESC (going up to 300A burst)…but weight 3 kg + 1kg for the ESC
6384 motor is 2800 W/ 4400 W max for 1.27 kg in addition to a smaller VESC (75100) thus saving around 2 kg which is a significant improvement in my opinion, along with a board closer to 100L etc…
Pilot weight is a variable to manage as much as possible 
I agree that nominal and peak current have to be considered in the design but can also be limited by the settings (remote, VESC parameters…) or a fuse. Loose or bad connection is also part of the selection of equipement or control before going.
Margin is the reflect of your design and efficiency…ligher is always the better in this case.
Going more than 50 A in nominal should be clearly the limit in most of our case.
Regarding limiting the current in the settings, in my world you size parts according to the use case, not the other way around. If the use case allows an xt90, great.
I checked the actual weight (i didn’t think it would be a lot): a 4g difference between a pair of xt90 and a pair of xt150 won’t be significant.
Although I understand your logic about the benefits of a lighter rig I don’t agree that saving 2kg by changing motor and VESC is worth the effort and cost. I really can’t see the weight reduction translating into better performance.
I would also be concerned that a “less powerful” motor/vesc combo might not be capable of delivering what your used to.
Your post didn’t say you were considering a smaller board so might make more sense to just create a whole new rig and keep your current setup as a “backup”.
Nothing worse than having nice conditions and a broken rig😀
Did you have a look to this XT90 test : https://www.youtube.com/watch?v=4rcCdCVBXAI&t=89s
Nominal is 90 amps
You can get more than 270 amps in burst condition (tested) so it should be ok for less…
I’ve seen similar videos. It doesn’t change my experience with them melting 
Could be fakes, quality variations etc, but the thing is, i never had an xt150 either desolder or melt and i’ve been running high power setups for a few years. I size the wires properly, normally 10AWG or 8AWG, depending on use case.
It’s also easier to just stock one connector type, since they both cost roughly 2eur for a pair here and the difference in weight is marginal i think it’s an easy choice
Physics can’t lie…the more weight you are moving, the more energy you have to introduce.
I am looking for a new setup, as the current is “outdoor”, using a normal board and having the battery and VESC in a case on top of it.
Next version will be with a new board and battery inside the board etc…
From the logs with that version and anticipating few improvement, a smaller motor like the 6384 can be (refer to JeffM v7 project).
To stop polluting Hsyn post, I am also considering the 65220 motor including the 75100 VESC as it is saving all the stuff related to the cooling of the electronic.
10 AWG battery wires are small but they will be cooled so capable to handle the higher current during take off.
I keep an eye on your project Hsyn and thank you for testing and sharing !
I wasn’t implying that your theory of “lighter is better” was incorrect. However I have had a friend who is substantially heavier than me ride my board successfully so in practical terms I believe that small weight alterations have no visible impact on ride performance on a full Efoil - non pumping rig.
To stick to this topic I don’t understand why someone would choose the 65220 integrated 75100 over the tried and true combo of 65161/75200.
It’s been pointed out that the 65220 setup has a greater potential for heat related failure and would be a more challenging repair, it’s also lower spec so logically less capable if required. The cost isn’t much different either.
I wish you success in your new build. I also began with a Frankenboard rig and then transitioned to a mainstream design and it made a massive improvement in ride quality and enjoyment
I went from 75200 to 75100—smaller, still tons of power. Now eyeing 65220 for easy setup—no water pipes or extras needed (my ESC stays outside the battery box, like in my pics).
Pavel, how do you waterproof the data connections (uart, ppm, usb… with your 75100 exposed to water? I have looked at your build but cant see those connections.
@agua4fun, I didn’t use connectors. The Bluetooth and remote modules are soldered to the ESC and sealed in a large connector box.
Please see the image in this post:
Russian͏ - EFOIL.builders / Builds - FOIL.zone
The USB connector does not need to be waterproof because it does not have power wires inside. And I cut it off because I do not use it.
If you have any additional questions, please don’t hesitate to ask, I’m always happy to answer.
What do you mean, usb connectors have 5v, com1, com2 and gnd, it can’t be exposed to water
I mean it does not have 5v wire inside, because it is not a host port. It serves a different purpose, not providing power to connected devices.
